HartsfieldâJackson Atlanta International Airport has been the world's busiest airport every year since 2000; with all airports combined London has the world's busiest city airport system by passenger count.
Tension or Temperature. Dogs may shake as a way of relieving tension. If a dog is feeling nervous or uncomfortable in a situation, it might shake the whole body as a way of shaking out tension. This behavior also may function as a means of getting attention from other dogs or people.
By shaking a toy, a dog is practicing the hunting skills that his instincts tell him are necessary to survive. An adult dog may use a toy to teach puppies this skill. In the home, dog toys provide a safe and appropriate outlet for your dog's killer instincts.